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Dynamic range reduction using mode filter

  • US 4,815,805 A
  • Filed: 11/12/1987
  • Issued: 03/28/1989
  • Est. Priority Date: 11/12/1987
  • Status: Expired due to Fees
First Claim
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1. An apparatus for reducing a dynamic range for an optical receiver, comprising:

  • a multimode optical fiber;

    a series of write taps serially disposed on the optical fiber;

    an optical receiver located downstream of the series of write taps and having means for receiving light from the optical fiber;

    means disposed between the optical fiber and the optical receiver for attenuating a magnitude of an optical signal generated by a write tap nearest to the receiver substantially more than a magnitude of an optical signal generated by a write tap furtherest from the receiver, a difference between the attenuations being in excess of 1.0 dB.

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